Project report/Seminar on Lime Soil Stabilization

7/24/2019 Project report/Seminar on Lime Soil Stabilization

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SEMINARON

LIME STABILIZATION

BY

SHUBHANKAR ROY

548/12

CIVIL BRANCH


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INTRODUCTION

THE SOIL STABILIZATION

PRINCIPLES OF SOIL STABILIZATION

USES OF SOIL STABILIZATION


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METHODS OF SOIL STABILIZATION

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LIME STABILIZATION

Lime stabilization is widel !sed means o" #$emi#all t%ans"o%min&!nstable soil into st%!#t!%all so!nd #onst%!#tion "o!ndation'

Lime soil stabilization o##!%s w$en lime is added to a %ea#ti(e soil to&ene%ate lon& te%m st%en&t$ &ain t$%o!&$ a )ozzolani# %ea#tion'

Not no%mall !sed wit$ S*+SP+ ,*+ o% ,P be#a!se o" t$e low amo!nt

o" "ines'


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BENEFITS -

In#%eases in %esilient mod!l!s (al!es

Im)%o(ement in s$ea% st%en&t$

'

Plasti#it %ed!#tion and swell%ed!#tion'

Red!#tion in moist!%e $oldin& #a)a#it

Lon& te%m d!%abilit o(e% de#ades o"se%(i#es e(en !nde% se(e%een(i%onmental #onditions'

USES- Soil lime $as been widel !sedas a modi"ie% o% a binde% in $i&$)lasti#it soil'

Soil lime also im)a%ts somebindin& a#tion e(en in &%an!la%soil'

Soil lime is e""e#ti(el !sed ine.)ansi(e soils wit$ $i&$)lasti#it inde.'


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LIME T$e%e a%e basi#all / t)es o" lime'

Hi&$ #al#i!m + 0!i#1 lime 2CaO3 Hd%ated+ $i&$ #al#i!m lime 4 Ca2OH356

7olomiti# lime 2Ca O 8 9& O3

No%mal+ $d%ated dolomiti# lime 4Ca

2OH3589&O6 P%ess!%e+ $d%ated dolomiti# lime 4Ca

2OH3589&O56

T$e lime is !s!allmi.ed wit$ wate% to

"o%m slaked lime(calcium hydroxide)

CaO+H2OCa(OH)2+

heat

w$i#$ is mo%e stablebe#a!se t$e lime:s

t$i%st "o% wate% $asbeen slaked.


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LIME HAS THE FOLLOWING EFFECTS:

It in#%eases t$e o)tim!m moist!%e #ontent '

Lime in#%eases t$e )lasti#it inde. '

T$e O9C$owe(e% in#%eases wit$ lime #ontent'

T$e ma.im!m d% densit29'7'73 o" t$e t%eated mate%ial de#%eases wit$ lime#ontent'

In soil lime mi.t!%e t$e "ail!%e st%ess in#%eases and t$e !ltimate st%essde#%eases #om)a%ed to t$e nat!%al soil'

Swell )otential and swell )%ess!%e a%e %ed!#ed s!bstantiall

St%en&t$ o" lime t%eated soil de)ends on a n!mbe% o" (a%iables in#l!din&t)es o" soil+ 0!alit o" lime+ ; o" lime+ #!%in& )e%iod and tem)e%at!%e'


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LIME CONTENT:

Re#ommended )e%#enta&es o" lime "o% labo%ato% testin& and "o% #onst%!#tion (a%"%om 5 to


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PRINCIPLES OF ADMIXTURE STABILIZATION:

T$e &ene%al obe#ti(es o" mi.in& #$emi#al additi(es to soil a%e to im)%o(e o% #ont%ol(ol!me stabilit st%en&t$+ st%en&t$ and st%ain )%o)e%ties+ )e%meabilit+ and d!%abilit'ol!me stabilit 2#ont%ol o" swellin& and s$%in1a&e3 #an be im)%o(ed b %e)la#emento" $i&$ $d%ation #ations s!#$ as+ sodi!m b low $d%ation #ations+ s!#$ as #al#i!m+ma&nesi!m+ al!mini!m o% i%on b #ementation and b wate%)%oo"in& #$emi#als' T$ede(elo)ment and maintenan#e o" $i&$ st%en&t$ and sti""ness is a#$ie(ed belimination o" la%&e )o%es+ b bondin& )a%ti#les and a&&%e&ate to&et$e% bmaintenan#e o" "lo##!lent )a%ti#le a%%an&ements and b )%e(ention o" swellin&'


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SOIL LIME MIXTURE DESIGN:

T$e main obe#ti(e in soil lime mi. desi&n is to establis$ t$e a))%o)%iate lime#ontent' 7e)endin& on t$e stabilization obe#ti(es+ a n!mbe% o" en&inee%in&

)%o)e%ties o" t$e soil?lime mi.t!%e m!st be #onside%ed' In#l!ded in t$ese isAtte%be%& limits+ CBR+ swell )otential and !n#on"ined #om)%ession' T$est%en&t$? test s)e#imen 2#lind%i#al3 s$o!ld be )%e)a%ed wit$ a len&t$ Dtodiamete% %atio o" 5 and t$ei% densit and moist!%e m!st be #a%e"!ll #ont%olled'Inmost )%o#ed!%es mi.t!%es a%e )%e)a%ed at o% nea% o)tim!m moist!%e #ontentas dete%mined b standa%d )%o#to% #om)a#tion'


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PRACTICE IN INDIA-

IRC/MOSTSPECIFICATION:

CBR o" lime soil mi.t!%es $as been ado)ted as t$e st%en&t$ #%ite%ion in India'CBR (al!e o"


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SOIL LIME REACTION MECHANISM:

T$%ee basi# #$emi#al %ea#tions t$at ta1e )la#e w$en )ozzolani# #las andlime a%e mi.ed in )%esen#e o" wate% a%e-

' Ca%bonation


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EXPERIENCE WITH DIFFERENT SOIL:

ALLUVIAL SOILS:

BLACK COTTON SOILS

LATERITE SOILS:


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CONSTRUCTION TECHNIQUES

AND

SPECIFICATION:

1. PLANT AND MACHINERY:

T$e #onst%!#tion )%o#ed!%e "o% s!%"a#e #onst%!#tion )%ima%il de)ends!)on t$e t)e o" )lant and ma#$ine% a(ailable' T$e%e a%e basi#allt$%ee t)es o" )lants in !se-

I' 9i. in )la#e.

II' T%a(ellin& )lant+ and

III' Stationa% )lant'


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2. PULVERIZATION OF SOIL:

3. SPREADING THE BINDER:

4'ADDITION OF WATER AND MIXING:

5. COMPACTION:

. THIC!NESS OF LIFTS:

". CURING:


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COST COMPA!SO"S

R R 5/=G S0' Ft'

Cost 'J= K S0' Ft'

Stabilize 5/=G S0' Ft'

Cost ' K S0' Ft'

Cost Sa(in&s ' K S0' Ft' ($115,000 )

A#o$e #ased o% &2' sectio% * lime &&, soils -eiht


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LIME SAFETY PRECAUTIONS

*o%1e% Sa"et'

Ee Haza%ds'

S1in Haza%ds'

In$alation Haza%ds'

P%od!#t Sa"et'


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E0AMLES

E.am)les in#l!de t$e 7en(e% Inte%national+ 7allas Ft' *o%t$+ andNewa%1 ai%)o%ts+ M!eensland 9ain Roads+A))ian *a nea%l 5===ea%s a&o'


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FUTURE *ORG-

T$e #o!nt% is endowed wit$ la%&e de)osits o" lime stone in (i%t!all

e(e% %e&ion' In o%de% to )o)!la%ize t$e te#$ni0!es+ a s!%(e o" e.istin&lime stone de)osits in t$e (a%io!s )a%ts o" t$e #o!nt% s$o!ld be!nde%ta1en' T$e )%o)e%ties o" t$e t)es o" lime "o% stabilizin& t$e lo#alsoils s$o!ld be e(al!ated' Low &%ades limes li1e Gan1a% limes t$at a%ea(ailable #$ea)l in some states dese%(e to be st!died (e% #a%e"!ll+ sot$at best !se #o!ld be made o" t$em "o% stabilization te#$ni0!es'


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CONCLUSION:

T$e main bene"its o" lime soil stabilization o" #las a%e im)%o(ed wo%1abilit+in#%eased st%en&t$ and (ol!me stabilit' *o%1abilit is im)%o(ed be#a!se

"lo##!lation ma1es t$e #la mo%e "%iable+ t$is assists #omm!ni#ation "o%e""e#ti(e mi.in& and #om)a#tion' Lime in#%eases t$e o)tim!m wate% #ontent"o% #om)a#tion+ w$i#$ is an ad(anta&e w$en dealin& wit$ wet soil'Flo##!lation and #ementation will ma1e t$e soil mo%e di""i#!lt to #om)a#t'Im)%o(ed (ol!me stabilit means %ed!#ed s$%in1a&e and swells !)on d%in&and wet %es)e#ti(el' An in#%ease in )e%meabilit #o!ld mean bette% d%aina&eand less )o%e )%ess!%e b!ild!) !nde% load


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LIME SOIL STABILIZATIONBY SHUBHANKAR ROY


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SCARIFICATION


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COMACTIN LIME


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ADDITIN 3ATER AFTER ADDIN LIME


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Documents

Project report/Seminar on Lime Soil Stabilization